10211221122020 has 48 divisors (see below), whose sum is σ = 22381473139200. Its totient is φ = 3905927726976.

The previous prime is 10211221121957. The next prime is 10211221122023. The reversal of 10211221122020 is 2022112211201.

10211221122020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 10211221122020.

It is not an unprimeable number, because it can be changed into a prime (10211221122023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919820 + ... + 4611779.

It is an arithmetic number, because the mean of its divisors is an integer number (466280690400).

Almost surely, 2^{10211221122020} is an apocalyptic number.

10211221122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211221122020 is an abundant number, since it is smaller than the sum of its proper divisors (12170252017180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10211221122020 is a wasteful number, since it uses less digits than its factorization.

10211221122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535644 (or 5535642 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10211221122020 its reverse (2022112211201), we get a palindrome (12233333333221).

The spelling of 10211221122020 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty".